198955664 has 10 divisors (see below), whose sum is σ = 385476630. Its totient is φ = 99477824.

The previous prime is 198955661. The next prime is 198955667. The reversal of 198955664 is 466559891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198955661) and next prime (198955667).

It can be written as a sum of positive squares in only one way, i.e., 176677264 + 22278400 = 13292^2 + 4720^2 .

It is not an unprimeable number, because it can be changed into a prime (198955661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6217349 + ... + 6217380.

It is an arithmetic number, because the mean of its divisors is an integer number (38547663).

Almost surely, 2^198955664 is an apocalyptic number.

It is an amenable number.

198955664 is a deficient number, since it is larger than the sum of its proper divisors (186520966).

198955664 is a wasteful number, since it uses less digits than its factorization.

198955664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12434737 (or 12434731 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The square root of 198955664 is about 14105.1644442736. The cubic root of 198955664 is about 583.7838851311.

The spelling of 198955664 in words is "one hundred ninety-eight million, nine hundred fifty-five thousand, six hundred sixty-four".